Particle morphology, crystal orientation, and electrochemical reactivity of LiFePO4 synthesized by the hydrothermal method at 443 K

Polyanionic Compounds as Cathode Materials

“…It is then desirable to reduce the crystallite size along this axis. However, this is a difficult problem because there is a tendency of the particles to grow in the form of plates in the (ab) plane [76], although the thickness along the b-axis is reduced to 30-40 nm in some cases [59,[77][78][79]. As we have recalled, for some synthesis routes, the reduction in size occurs at the expense of crystallinity and the formation of a large concentration of defects [78], which reduces the electrochemical performance.…”

Phosphate Materials for Rechargeable Battery Applications

“…After this new cathode development, various kinds of phosphate materials have been investigated. In our research groups, several phosphate cathode materials have been studied and applied to new safe batteries [9][10][11][12][13][14][15][16] . FIGURE 1 Evolution of energy density of rechargeable lithium ion battery.…”

Synthesis Processes for Li-Ion Battery Electrodes – From Solid State Reaction to Solvothermal Self-Assembly Methods

“…On the other hand, hydrothermal synthesis is an effective method to obtain well-crystallized materials with well-defined morphologies, where no additional high-temperature treatment is needed, but no small size particles can www.intechopen.com Lithium Ion Batteries -New Developments 4 be obtained. Tryphilite crystals of about 1x3 m have been produced by this method without carbonaceous coating [Yang, S. et al (2001); Tajimi, S. et al (2004); Dokko, K. et al (2007); Kanamura, K. and Koizumi, S. (2008)]. Conductive carbon coating can be produced by using diverse additives that also act as reductive agents, such as sucrose, ascorbic acid [Jin, B. and Gu, H-B.…”